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Binder in use for jointing covering rubber on table tennis bat

A table tennis racket and covering technology, applied in the direction of natural rubber adhesives, adhesives, adhesive types, etc., can solve the problems of short retention time of elastic effect, fast solvent volatilization, difficulty in producing elastic effect, etc. The effect of preparation time, simple preparation process, and good solubility

Inactive Publication Date: 2007-07-25
徐昊为
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the solvent-based adhesives commonly used in the rubber coverings of table tennis rackets have an elastic-increasing effect, because the solvent volatilizes quickly, the maintenance time of the elastic-increasing effect is relatively short, only tens of minutes; the water-based adhesive is water-based. Solvent, which is generally composed of natural rubber, cis-polybutadiene and other rubber as the main material, is not compatible with the rubber covering of the table tennis racket, and it is difficult to produce an elastic effect; the film-type pressure-sensitive adhesive does not contain solvents. No elasticizing effect due to swelling

Method used

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  • Binder in use for jointing covering rubber on table tennis bat

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Natural rubber: 85g; Butadiene styrene copolymer: 15g; Rosin 10g; White carbon black: 20g; 2,6-di-tert-butyl-4-methylphenol (antiaging agent 264): 1g Mix in a rubber mixer, then take 28g of the mixed rubber and place it in 172g of 1,8-terpene, let it stand for 5 to 8 hours, and stir continuously for 2 to 4 hours to obtain a uniform, translucent pressure-sensitive type adhesive.

[0019] Drying time and tack retention time test. Take an appropriate amount of the prepared adhesive and apply it evenly on a glass sheet. The thickness of the coating is controlled at about 0.2-0.4mm. The time for the adhesive coating to touch dry at room temperature is taken as the drying time, and the adhesion is observed at the same time. The time from touch drying to the time when most of the coating surface loses its viscosity is taken as the viscosity retention time. Peel test. Use the same material and surface state as the adherend (in this case, plywood and cricket cover), cut it in...

Embodiment 2

[0023] With 230 type chloroprene rubber: 100g; Zinc oxide: 5g; Magnesium oxide: 4g; Stearic acid: 1g; ): 1g; operating oil: 3g; vinylthiourea (accelerator EUR): 2g; Put 36g of the mixed rubber into 200g of 1,8-terpene: 89g; ethyl acetate: 11g; in a mixed solvent, let it stand for 5 hours, and keep stirring until the mixed rubber is completely dissolved.

[0024] Peel test. Take an appropriate amount of vulcanized adhesive, apply it evenly on a 25×200mm table tennis racket cover rubber and sponge, and paste it after it is fully dried, as a sample, and then use the same adhesive to glue two pieces of the same size as the sample. The size of 2×2 canvas is pasted on both sides of the specimen. Put this sample in an environment of 80°C for 30 minutes to vulcanize, and then park it at room temperature for 12 hours, and perform a 90° peel test on it with a tensile testing machine.

[0025] The drying time of the product is 52 minutes, the viscosity retention time is > 9 hours, the...

Embodiment 3

[0027] Regenerated styrene-butadiene rubber: 85g; polyisoprene: 15g; terpene resin: 20g, mixed on an open rubber mixer, then took 26g of mixed rubber and placed it in 170g of 1,8-terpene two In the mixed solvent of alkene and ethanol, let it stand for 3 hours, and continue to stir for 5 hours, and the obtained glue is uniformly dissolved.

[0028] The sample preparation and testing methods were the same as in Example 1. The test results showed that the drying time was 60 minutes, the viscosity retention time was >15 hours, the peeling test was 2.3N / 25mm, the elasticity retention time was >1 hour, and the swelling was rapid and extremely raised.

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Abstract

This invention discloses a pressure-sensitive adhesive for rubber layer on table tennis racket. The adhesive is composed of: solvent 60-90 wt. %, rubber 8-20 wt. %, and thickening resin 2-20 wt. %. The solvent is 1, 8-terpadiene, or a mixture of 1, 8-terpadiene and one or two of ethyl acetate, methanol and ethanol. The rubber is one or two of nonpolar rubbers such as natural rubber, and polar rubbers such as polychlorobutadiene, or rubber compound. 1, 8-terpadiene used as the solvent has high solvency for rubber layer on table tennis racket, and is harmless and environmentally friendly. The adhesive, when used on rubber layer on table tennis racket, has such advantages as rapid swelling, long elasticity-enhancing effect, and simple process.

Description

technical field [0001] The invention relates to an adhesive used for pasting a rubber covering on a table tennis racket, which belongs to the pressure-sensitive adhesive technology. Background technique [0002] Most of the adhesives used to paste the rubber cover of table tennis rackets are solvent-based rubber adhesives, in which solvents are mostly benzene, toluene, xylene, solvent gasoline, alkanes, cycloalkanes, halogenated hydrocarbons, etc. Organic solvents that affect human health and harm the environment. Along with sports organizations such as International Table Tennis Federation strictly limit the use of above-mentioned solvent regulations in table tennis competitions, some manufacturers have begun to develop water-based and non-solvent adhesives. For example, the water-based adhesive disclosed in JP2006169443A patent uses an aqueous solution of water-soluble resin such as PVA as the adhesive. Although this type of adhesive has a certain bonding effect, it is e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J107/00C09J109/00C09J111/00C09J123/34A63B59/04A63B59/45A63B102/08
Inventor 徐昊为
Owner 徐昊为
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